WO1996026317A1 - Dispositif de nettoyage - Google Patents

Dispositif de nettoyage Download PDF

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Publication number
WO1996026317A1
WO1996026317A1 PCT/EP1996/000691 EP9600691W WO9626317A1 WO 1996026317 A1 WO1996026317 A1 WO 1996026317A1 EP 9600691 W EP9600691 W EP 9600691W WO 9626317 A1 WO9626317 A1 WO 9626317A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
conveyor belt
suction
belt
suction chamber
Prior art date
Application number
PCT/EP1996/000691
Other languages
German (de)
English (en)
Inventor
Wolfgang Schneider
Hans-Peter Sollinger
Karlheinz Straub
Jürgen BANNING
Original Assignee
Voith Sulzer Papiermaschinen Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7755860&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1996026317(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Sulzer Papiermaschinen Gmbh filed Critical Voith Sulzer Papiermaschinen Gmbh
Priority to DE59603626T priority Critical patent/DE59603626D1/de
Priority to JP8525388A priority patent/JPH11502266A/ja
Priority to EP96904822A priority patent/EP0817884B1/fr
Publication of WO1996026317A1 publication Critical patent/WO1996026317A1/fr
Priority to FI973436A priority patent/FI111742B/fi

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts
    • D21F1/325—Washing wire-cloths or felts with reciprocating devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/04—Paper-break control devices

Definitions

  • the invention relates to a device for cleaning a conveyor belt in a
  • Paper-making machine for example an endless circulating dry or wet screen or a felt, with at least one nozzle which can be directed against the conveyor belt, in particular can be moved in the direction transverse to the conveyor belt, for loading the conveyor belt with air or liquid.
  • conveyor belts in particular fabric belts, are used in paper machines. These conveyor belts become contaminated during the operation of the paper machine; Meshes or pores of these tapes are added, for example, from paper fibers, adhesives or other additives. In order to ensure proper functioning of the conveyor belt, in particular in the dryer section of the paper machine, the conveyor belt must be cleaned.
  • a cleaning device of the type mentioned at the outset which can be used for this purpose is known from G 92 08 909.7 U1.
  • the idea was already given to additionally arrange rotatable spray nozzles which can be moved transversely to the direction of travel of the conveyor belt, so that the nozzle jet not only describes a linear path due to the movability transversely to the direction of travel of the conveyor belt, but also that this linear movement has a circular motion Movement is superimposed.
  • the advantage of such a cleaning device is that liquid sprayed onto the conveyor belt to be cleaned can be applied more uniformly and onto a larger flat area of the conveyor belt.
  • the rotatable nozzle acts on a relatively wide strip-shaped area of the conveyor belt instead of a linear one. It is therefore better possible to ensure a uniform cleaning of the entire surface of the rotating conveyor belt.
  • the conveyor belt is acted upon by deflection liquid after deflection by 180 'from above and from the side opposite the transport side.
  • the rotatable nozzles are thus arranged within a loop guide of the endless conveyor belt.
  • collecting troughs are provided below the conveyor belt for receiving and removing cleaning fluid and detached contaminants.
  • the invention is therefore based on the object of improving a cleaning device of the type mentioned at the outset in such a way that the disadvantages mentioned do not occur, that the device can be produced compactly and in particular in an economical manner and can be used reliably.
  • This object is achieved according to the invention in that a suction chamber directly surrounding the nozzle is provided, so that dirt and / or water mist or residual water detached from the conveyor belt by the nozzle jet can be sucked in and removed in the shortest possible way into the suction chamber.
  • the suction space is formed by a suction bell surrounding the nozzle in the form of a jacket.
  • the suction bell can preferably be formed by an essentially cylindrical sheathing of the nozzle which, as is known per se, traverses across the conveyor belt. Instead of a circular cross-section, an elliptical or oval shape can also be provided.
  • the nozzle or the nozzle head can be arranged eccentrically to the sheathing in the opposite direction of the belt.
  • the suction bell is on its side facing the conveyor belt End region is in particular designed to widen bell-shaped or conical. As a result, the flat area of the conveyor belt, which is picked up by the suction bell or by the suction space, is enlarged.
  • the nozzle is inclined with respect to the surface normal of the conveyor belt.
  • at least one rotating and inclined nozzle is preferably provided, since this enables the nozzle jet to better remove the dirt adhering to the conveyor belt.
  • a cleaning impulse impinging on the conveyor belt from different directions is available. It has been shown that the cleaning effect is most effective in the area of rotation in which the nozzle or the nozzle jet has a speed component which is opposite to the running direction of the conveyor belt.
  • the rotatable nozzle jet has a speed component directed in the running direction of the conveyor belt.
  • an aperture can be provided which prevents the nozzle jet from striking.
  • nozzle feeds which can be acted upon in sections can also be provided.
  • a rotatable nozzle instead of a rotatable nozzle, a rotatable nozzle head with several nozzles can be provided, one or more of which can be designed as driving nozzles for rotating the nozzle head. It is also possible to provide at least one additional nozzle, the outflow direction of which Conveyor belt runs away, which is used only for the rotary drive.
  • the opening of the suction bell facing the conveyor belt is designed to be adapted to the surface of the conveyor belt or the cylindrical shape of a roller over which the conveyor belt is guided.
  • Figure 1 shows an embodiment of the cleaning device according to the invention
  • FIG. 2 shows a section through a nozzle head that can be used in the device according to FIG. 1;
  • Figure 3 is a view of the nozzle head of Figure 2 from below.
  • FIG. 4 shows a partial section of the cleaning device according to the invention in accordance with a further exemplary embodiment
  • FIG. 5 shows a top view of the cleaning device according to FIG. 4;
  • FIG. 6 shows a section through a cleaning device according to a further exemplary embodiment
  • FIG. 7 shows a schematic representation of a dryer section with the cleaning devices according to the invention.
  • FIG. 1 shows an embodiment of the cleaning device 2, which is arranged for cleaning a dryer fabric belt 4 in the region of a roller 6 of a paper machine, not shown.
  • the cleaning device 2 comprises a rotary nozzle 8 with a rotatable nozzle head 10, which has a nozzle arrangement, not shown.
  • This nozzle arrangement can comprise one or more tangentially flowing driving nozzles for generating a rotational movement in the range of 2000-3000 revolutions per minute as well as one or more cleaning nozzles which serve to act on the dryer fabric 4.
  • a cylindrical suction bell 14 is provided, which surrounds the nozzle 8 and the nozzle head 10.
  • the interior of the suction cup 14 is connected in terms of flow to a suction line 16 and forms a suction space 18 assigned to the nozzle. or water mist formation occurs, which in turn leads to the moistening of the paper web or the paper machine.
  • a known steam-blowing device with a suction device connected on the same side of the fabric belt also does not produce satisfactory results (DE 43 22 565 AI).
  • the invention is therefore based on the object of improving a cleaning device of the type mentioned at the outset in such a way that the disadvantages mentioned do not occur, that the device can be produced compactly and in particular in an economical manner and can be used reliably.
  • This object is achieved according to the invention in that a suction chamber directly surrounding the nozzle is provided, so that dirt and / or water mist or residual water detached from the conveyor belt by the nozzle jet can be sucked in and removed in the shortest possible way into the suction chamber.
  • the suction space is formed by a suction bell surrounding the nozzle in an antelike manner.
  • the suction bell can preferably be formed by an essentially cylindrical sheathing of the nozzle which, as is known per se, traverses across the conveyor belt.
  • an elliptical or oval shape can also be provided.
  • the nozzle or the nozzle head can be arranged eccentrically to the sheathing in the opposite direction of the belt.
  • the suction bell is on its side facing the conveyor belt Dryer screen 4 and so removes the contaminants from its surface. Due to the superimposition of the traversing movement and the rotational movement of the cleaning nozzle, the dirt particles are hit by the liquid jet of the cleaning nozzle in different directions and can therefore be detached more easily than when a nozzle running parallel to the longitudinal axis direction 26 is used.
  • the inclination of the cleaning nozzle or the liquid jet also has the effect that the impinging liquid jet is reflected in the suction space 18 and the water mist which is formed, with dirt particles bound therein, and residual water can be discharged via the suction line 16. There is a suction effect or flow represented by the arrows.
  • FIGS. 2 and 3 show a nozzle head 10 'corresponding to the rotatable nozzle head 10 in different views.
  • the nozzle head 10 ' is rotatably held on a flange 30 by means of a bearing 28.
  • a stationary nozzle feed line 32 which flows into a pressure chamber 34, the walls 36 of which bear sealingly against the inside of a cylindrical component 38.
  • the cylindrical component 38 has four openings arranged at an angle of 90 'to one another.
  • nozzle feed lines 40 Connected to this are nozzle feed lines 40, which extend radially outward and in their end section for preferred are bent 90 °, as can be clearly seen in FIG.
  • the nozzle feed lines 40 finally end in inclined cleaning nozzle end regions 42.
  • the driving nozzles also provided are not shown. As can also be seen from FIGS. 2 and 3, only one of the nozzle feed lines 40 is always pressurized, while the other nozzle feed lines 40 are depressurized.
  • the pressure chamber 34 is now oriented in such a way that the liquid jet has a speed component opposite the direction of travel of the dryer fabric 4, so that the cleaning effect is particularly high.
  • the nozzles, the liquid jet of which would have a speed component in the running direction of the dryer fabric 4 are depressurized with regard to a low water consumption and are therefore deactivated.
  • the cleaning nozzles are designed for a pressure range from 150 bar to 300 bar and have a nozzle diameter of 0.3 mm. Sapphire or ceramic materials are preferably used as the nozzle material.
  • FIGS. 4 and 5 A second exemplary embodiment of a cleaning device is shown schematically in FIGS. 4 and 5. This corresponds essentially to the cleaning device described with reference to FIGS. 1 to 3, which is why a repeated explanation of the corresponding parts is dispensed with.
  • One difference is the oval cross-sectional shape of the suction bell 14, in which the nozzle head 10 is arranged eccentrically in the opposite direction of the belt running (arrow P). This improves the suction effect on the water mist (loaded with dirt).
  • a screen 61 is provided between the nozzle head 10 and the dryer fabric belt 4, the outermost edge 63 of which is angled.
  • This edge 63 serves as a fastening edge for webs 65, which in turn are connected to the inner wall of the suction bell 14. Openings or gaps 67 are formed between the individual webs 65, the suction cup wall 14 and the panel edge 63, via which a connection from the suction chamber 18 to the outside is created.
  • the aperture 61 has an opening 69, which is located in the effective area of the rotating cleaning nozzles 71.
  • the dimensioning and position of this opening 69, in particular in the circumferential direction of the diaphragm 61, is selected such that at least one cleaning nozzle 71 always passes through this area, the direction of the nozzle jet being opposite to the direction of tape travel (arrow P).
  • the liquid mist reflected by the dryer fabric belt 4 is sucked into the suction chamber 18 either through the aperture 69 or through the aforementioned gap 67.
  • the rotor head 10 is driven via nozzles 73. It can be seen from FIG. 4 that these nozzles 73 are oriented in such a way that the escaping medium has an axial flow component which is opposite to the axial component of the liquid jet . This makes it possible to compensate for the axial recoil forces, which leads to a relief of the bearing 28.
  • FIG. 6 shows a further exemplary embodiment of a cleaning device according to the invention, in which, however, no rotating cleaning nozzles are provided. Rather, the cleaning nozzles 81 are firmly connected to the suction bell 14. The cleaning nozzles 81 are oriented toward the center of the suction cup 14 in such a way that the liquid jets 83 preferably meet at a point which lies opposite the opening area of the suction cup 14. If this point lies directly on the conveyor belt, a point-wise loading is achieved. If the distance between the nozzles and the conveyor belt is changed, the intersection of the liquid jets also shifts. The punctiform application then becomes a flat application.
  • the liquid mist bouncing off the dryer fabric belt 4 is sucked into the suction chamber 18, as in the previous cases.
  • the suction effect is intensified by the suction bell which continues below the nozzles 81 and which ends very close to the conveyor belt.
  • the cleaning nozzles 81 are aligned such that the component directed in the direction of movement of the dryer fabric belt 4 is as small as possible.
  • a section of a drying section is shown schematically in FIG. 7, two single-row drying groups 91 and 93 being indicated.
  • Each of these two drying groups 91 and 93 is composed in a known manner from a plurality of drying cylinders 95 and deflection rollers 97. Drying cylinders 95 and deflecting rollers 97 are arranged in such a way that the paper web alternately passes through drying cylinders and deflecting rollers and the dryer group passes through in a meandering fashion.
  • Each dryer group 91 and 93 is assigned a dryer fabric belt 4, which runs onto the paper web at the beginning of each dryer group and is removed and returned at the end of the dryer group.
  • a cleaning device 2 interacts with a dryer fabric belt 4.
  • the two cleaning devices 2 are each arranged on a dryer fabric guide roller 6 in the initial region of the return of the dryer fabric belt 4. It can thus be achieved that the cleaning liquid remaining on the dryer fabric belt 4 can evaporate before the dryer fabric belt comes into contact with the paper web again.
  • the guide rollers of the return following the roller 6 also help to remove liquid from the Dryer screen belt 4 at, on the one hand due to the overpressure arising in each “run-up gusset” and on the other hand due to the centrifugal force exerted on the liquid particles during the run around the roller.

Landscapes

  • Paper (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un dispositif pour nettoyer une bande transporteuse en défilement dans une machine à papier, par exemple une bande de tamisage par voie humide ou sèche ou une bande de feutre, comportant au moins un ajutage pouvant être dirigé vers la bande textile et envoyer sur celle-ci de l'air ou du liquide. Le dispositif présente une chambre d'aspiration (18) qui coopère avec l'ajutage (8) et est située de telle manière que le brouillard de saleté décollée de la bande transporteuse (4) par le jet (12) et/ou le brouillard d'eau ou l'eau résiduelle peuvent être aspirés dans la chambre d'aspiration (18) et évacués de celle-ci.
PCT/EP1996/000691 1995-02-24 1996-02-20 Dispositif de nettoyage WO1996026317A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59603626T DE59603626D1 (de) 1995-02-24 1996-02-20 Reinigungsvorrichtung
JP8525388A JPH11502266A (ja) 1995-02-24 1996-02-20 掃除装置
EP96904822A EP0817884B1 (fr) 1995-02-24 1996-02-20 Dispositif de nettoyage
FI973436A FI111742B (fi) 1995-02-24 1997-08-21 Puhdistuslaite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19507938.8 1995-02-24
DE19507938A DE19507938C2 (de) 1995-02-24 1995-02-24 Reinigungsvorrichtung

Publications (1)

Publication Number Publication Date
WO1996026317A1 true WO1996026317A1 (fr) 1996-08-29

Family

ID=7755860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000691 WO1996026317A1 (fr) 1995-02-24 1996-02-20 Dispositif de nettoyage

Country Status (8)

Country Link
EP (1) EP0817884B1 (fr)
JP (1) JPH11502266A (fr)
CN (1) CN1176674A (fr)
AT (1) ATE186582T1 (fr)
CA (1) CA2213100A1 (fr)
DE (3) DE19507938C2 (fr)
FI (1) FI111742B (fr)
WO (1) WO1996026317A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887460A1 (fr) * 1997-06-25 1998-12-30 Voith Sulzer Papiermaschinen Gesellschaft mbH Procédé et appareil pour nettoyer une bande de transport
US6143092A (en) * 1997-06-25 2000-11-07 Voith Sulzer Papiermaschinen Gmbh Process for cleaning a transport belt

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702196C5 (de) * 1997-01-23 2010-04-22 Voith Patent Gmbh Vorrichtung zum Reinigen eines Transportbandes
DE10136467A1 (de) * 2001-07-26 2003-02-06 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Reinigen eines umlaufenden Bandes
DE102006042934A1 (de) * 2006-09-13 2008-03-27 Voith Patent Gmbh Bandreinhaltung
DE102009002567A1 (de) 2009-04-22 2010-10-28 Voith Patent Gmbh Vorrichtung zum Abführen von Schleuderwasser an einem Umlenkpunkt
JP6457753B2 (ja) * 2014-07-09 2019-01-23 岩谷産業株式会社 吸引装置、吸引方法
DE102015206747A1 (de) * 2015-04-15 2016-10-20 Voith Patent Gmbh Reinigungsvorrichtung
JP6879106B2 (ja) * 2017-07-31 2021-06-02 セイコーエプソン株式会社 解繊物製造装置、及びシート製造装置
CN114016320B (zh) * 2021-11-02 2022-09-06 常州凯捷特水射流科技有限公司 一种基于高压反冲的造纸机干网清洗组件及设备
CN113818275B (zh) * 2021-11-02 2022-08-23 常州凯捷特水射流科技有限公司 一种造纸生产线用干网清洗组件及装置
CN114277601A (zh) * 2021-12-31 2022-04-05 上海金旋旋转接头制造有限公司 一种造纸机在线干网气体清洗系统及其清洗方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745206C (de) * 1936-07-23 1944-03-31 Vickerys Ltd Vorrichtung zum Reinigen und Auffrischen der Filze in Papiermaschinen
DE2548432A1 (de) * 1974-10-30 1976-05-13 Bernard Eaton Hart Vorrichtung zur erzeugung eines rotierenden duesen- oder spruehstrahles
GB1458294A (en) * 1973-02-28 1976-12-15 Beloit Corp Conditioner and cleaner for a travelling porous belt
WO1994012349A1 (fr) * 1992-11-25 1994-06-09 Sjoeberg Staffan Appareil servant au nettoyage d'objets en mouvement
DE29503752U1 (de) * 1995-02-24 1995-04-27 Voith Sulzer Papiermasch Gmbh Reinigungsvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1540454A (en) * 1920-02-02 1925-06-02 John T Ayers Process of cleaning conveying and supporting elements
DE7929277U1 (de) * 1979-10-16 1980-02-14 Pumpenfabrik Urach, 7432 Urach Rotationswaschkopf
DE8703442U1 (fr) * 1987-03-07 1987-05-21 Ludwig, Guenter, 5024 Pulheim, De
DE9014456U1 (fr) * 1990-10-18 1992-02-20 Storchwerke Gmbh, 5600 Wuppertal, De
DE9208907U1 (fr) * 1992-07-03 1992-09-24 Walter, Klaus, 8205 Kiefersfelden, De
DE4322565A1 (de) * 1993-07-07 1993-12-09 Voith Gmbh J M Filzsauger mit feuchter Warmluftzufuhr von der Saugseite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745206C (de) * 1936-07-23 1944-03-31 Vickerys Ltd Vorrichtung zum Reinigen und Auffrischen der Filze in Papiermaschinen
GB1458294A (en) * 1973-02-28 1976-12-15 Beloit Corp Conditioner and cleaner for a travelling porous belt
DE2548432A1 (de) * 1974-10-30 1976-05-13 Bernard Eaton Hart Vorrichtung zur erzeugung eines rotierenden duesen- oder spruehstrahles
WO1994012349A1 (fr) * 1992-11-25 1994-06-09 Sjoeberg Staffan Appareil servant au nettoyage d'objets en mouvement
DE29503752U1 (de) * 1995-02-24 1995-04-27 Voith Sulzer Papiermasch Gmbh Reinigungsvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887460A1 (fr) * 1997-06-25 1998-12-30 Voith Sulzer Papiermaschinen Gesellschaft mbH Procédé et appareil pour nettoyer une bande de transport
US5964956A (en) * 1997-06-25 1999-10-12 Voith Sulzer Papiermaschinen Gmbh Process for cleaning a transport belt
US6143092A (en) * 1997-06-25 2000-11-07 Voith Sulzer Papiermaschinen Gmbh Process for cleaning a transport belt

Also Published As

Publication number Publication date
FI973436A (fi) 1997-08-21
DE59603626D1 (de) 1999-12-16
ATE186582T1 (de) 1999-11-15
EP0817884B1 (fr) 1999-11-10
DE19507938A1 (de) 1996-09-12
EP0817884A1 (fr) 1998-01-14
FI111742B (fi) 2003-09-15
FI973436A0 (fi) 1997-08-21
DE59608227D1 (de) 2002-01-03
CN1176674A (zh) 1998-03-18
DE19507938C2 (de) 1997-11-20
CA2213100A1 (fr) 1996-08-29
JPH11502266A (ja) 1999-02-23

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